Before you start running IOs, perform system diagnosis to check if the health conditions of the network and drives are normal.

Note:

You must stop all IOs before running the diagnosis. If not, the obtained diagnosis result can be inaccurate.

Network

The system will check the current network status.

1. Go to Settings > Maintenance > System diagnosis > Network diagnosis, and then click Diagnose.
2. You can see the diagnosis result once the test is finished.
3. Follow the troubleshooting suggestions to resolve the problem if the system has reported any abnormality in the result.

Note:

• To identify location of abnormalities, click on Service LED to highlight the nodes in question.
• You can export the diagnostic result to an Excel file.

Hard Drives

The system checks the current drive status.

1. Go to Settings > Maintenance > System diagnosis > Hard drive diagnosis, and then click Diagnose.
2. You can see the diagnosis result once the test is finished.
3. Follow the troubleshooting suggestions to resolve the problem if the system has reported any abnormality in the result.

Note:

• If a drive is found in an abnormal state, you must replace it with a healthy one to prevent performance drop.
• You can export the diagnosis result to an Excel file.